condition mean min max ZT0-3 585.8 585.8 585.8 ZT4-7 318.8 318.8 318.8 ZT8-11 324.0 324.0 324.0 ZT12-15 718.25 718.25 718.25 ZT16-19 968.2 968.2 968.2 ZT20-23 823.6500000000001 823.6500000000001 823.6500000000001